Physiological Quality of Bean Seeds Related To Azotobacter Spp.

Abstract

Research aimed at improving the quality of crops. The results obtained with seed coating were very influential with regard to fertilization and disease resistance. Nitrogen fertilization increases costs in agricultural production and the loss of fertile lands, altering the natural conditions and has negative consequences for the microorganisms (MO), which regulate the balance between quality of crops and soils. The biological nitrogen fixation (BNF) consists on MO work which provide nitrogen in soil and secrete substances that promote plant growth, these can be made by inoculation of seeds. The germination rate, emergency and vigor are an indicator that determines the productivity and physiological quality of a plant variety. The germination rate, number of emerged seeds per pot in favorable field conditions and vigor by accelerated aging test were evaluated. The seed treatments were: the seed inoculation with Azotobacter spp., Immersion in nutrient broth without bacteria, sterilization and zero handling. The experiment has shown that inoculation of common bean seeds with Azotobacter spp. does not adversely affect germination, emergency or vigor and stimulate the development of abnormal seedlings.

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